I would say the correct answer would be Alex is his brother since the way the statement is worded, first it talks of his sister, then of his brother Jerry and next his sibling, Alex so since it comes right after the mention of his brother Jerry I would think Alex would be a brother though I can't prove it .
There is no description so I am not sure, however I believe it is C. Cytoplasm
Presented for acceptance or rejection
I am pretty sure the answers A.
The rest of them make no relation/sense to the question.
